Simulation of water resource loss in short-distance coal seams disturbed by repeated mining

摘要: Physical simulations and field measurements were performed to study the movement of overlying strata water conductive fractures (WCF) under conditions repeated mining in short-distance coal seams. In addition, feasibility resource conservation (WRCM) was analyzed areas disturbed by mining. The results simulation showed that aquiclude remained intact after Coal Seam 11 (the 1st main seam) Shigetai mine northwest China. According findings, WRCM can be conducted this area. After 12 2nd seam), WCF above central section mined-out area will gradually compress close. However, due impact seams, at edge are connected Quaternary loose aquifer not likely close, resulting loss resource. Thus, would difficult conduct. Moreover, observations remain is mined, but aquifer’s level probably fully recover if mined. This consistent with results. Therefore, appropriate technical measures must taken conduct seam shallow-buried These research used as a reference for future endeavors arid semi-arid regions